Iraq's prime minister has issued a travel ban for several parliamentary officials accused of corruption.

The ban was ordered as a "temporary measure" against those accused and will remain in place until an investigation is completed, according to a statement from Prime Minister Haider al-Abadi's office.

The ban came in response to claims by Defense Minister Khaled al-Obeidi, who on Monday, told lawmakers that parliament speaker Salim al-Jabouri, and several other lawmakers had tried to blackmail him to secure lucrative government contracts.

Obeidi made the accusations as he was being questioned by parliament in response to allegations of corruption in the defense ministry.

Abadi has ordered the country's anti-corruption commission to investigate the allegations.